Link: Use VnStat to Monitor Network Traffic from Linux Command Line

Network traffic monitoring not only helps administrators detect root causes of traffic related issues, like network overloading, but also helps them keep a tab on traffic flow to and from the Internet. Overall, it’s an important task that requires a dedicated and an effective software.

For Linux, there are many GUI-based network traffic monitoring tools, but if you are looking for a command line-based utility, vnstat is worth trying out. In this article, we will discuss the basics of the command along with the features it provides.